Kunigunde of Altdorf (also known as Cunegonde or Chuniza; c. 1020 – 31 August 1054) was the ancestress of the younger House of Guelph, a cadet branch of the House of Este.

Life

She was the only daughter of Count Welf II of Altdorf (d. 1030) and his wife Ermengarde (d. 1057), daughter of Count Frederick of Luxembourg (d. 1019) and Irmentrud of Gleiberg. Kunigunde of Altdorf was a niece of the Empress Kunigunde (d. 1033). Her brother was Welf III (d. 1055), the last member of the Elder House of Welf.

Kunigunde married c. 1035 to Albert Azzo II, Margrave of Milan, Luni, and Tortona. He was the only son of Albert Azzo I and his wife Adelaide. They had one son:

Welf IV, (between 1030 and 1040 – 9 November 1101 in Paphos. He was named after his uncle, Welf III. He was Duke of Bavaria from 1070 to 1077. He married twice:

1.Ethelinde of Northeim (c. 1050 – after 1075), divorced in 1070 on the grounds of childlessness